From looking at the document, the patches are given in 7-bit midi values of 0-127 rather than percentages.
If you are simply copying exact knob values between the two synths then hooking up your P6 to something which can show its midi values when turning its knobs will help.
If you don’t want to do that, you could perhaps divide the standard pot rotation of 270° by 128 then multiply by the values given to work out the positions.